I had this conversation with a friend today ...
In order to even HAVE an average you need to have babies at each end of the scale ... so why people need to comment on how fat or thin babies are is beyond me!
My DD is enormous. Today she had her 9 month check. She is 10.8kgs (that is above the 98th percentile) but she is IN PROPORTION ... she is on the 98th for height AND head circumference. Although DH and I are not particularly huge people we come from tall families (both grandfathers over 6ft ... my sister 5'10" ... my grandfather was 6'5")
My friend's baby on the other hand is a dinky little thing, weighing in at 7Kgs (under the 25th percentile) ... my friend is tiny and her husband is not tall either and both grandfathers are 5'6".
Both babies (the same age) are healthy, alert, breastfed with one formula bottle a day, on 3 meals a day, babbling, pointing, have one tooth each, sleep well and are just wonderfully gorgeously lovely ....
Adults aren't all the same size and weight so why should babies be??????
Whatever weight your baby is s/he is just perfect!!!!!
A good answer to you SIL, Levanna, could be, "Well, DD won't always be fat, but you will always be ugly!" Go on .... I dare you!!!!!!